Electric power-hammer.



T. F. B AILY.

ELECTRIC POWER HAMMER.

APPLICATION FILED MAY 19, 19 09.

Patented Aug. 3, 1909.

umummuunnn- 20 an'ddurabl CCIlSl' I'IIGlZ-IQD, which will he eflii somers by the wearing or breaking of the sold Moo 'rnhnnnnsr. BAILY,OAQFALLIAN'OE, OHIO, ASSIGNOR or ONE HALF Jro THE Tiinnsos &

' W L IAMS C PANY, or ALLEANOE, onio, A oonronmionor 01110.,

nnno'rmo POWER-HAMMER.

Toiall whom it may concern:

- Be it known that I, THADDEUS BAILY, a

citizen of the'United States, residing at Allisince, in the countyofStark and State of to such a device as the trolled Ohimhave inventedmnewnnd usefulElec- ,trrc Power-Hanmier, Of WhICh the following is a.specification.

My invention relates to improvements in power-hammers adapted for use inforging and otherwork requiring the use of p. haun- .-1'ner adapted toyield blows of varying intensity as the nature of thepnrtleular work tobe done'mey require, and-lies peculiarrefcrence entioned in which analternatingelectriocurrent1s used to sup- The objects of my improvementare to provide an electric power-hammer ndopted.

to beoperated by sin alternating current, the hammer being; ofmecuhnrlysimple, compact cient and which me be fully and easily coni Qne ofthcimportantohjects of the invention especially to he noted is to do awaywith the pistgn rod or other intermediate connecting means'hetweentheram and that movable portion of the construction to whichthepower is applied. Heretol'ore much annoyance has been'caused the usersof power hampiston rodjor connectingjnieans. ilnthe ronstruetion hereinaliter set l'orth it will be noted that all of thennnoyingdiliieulties.hereto fore experienced by reason ol" theso called pistonhead eonstruetirm are wlmllv obviated. H I i llhese ohjeets, togetherwith other objects readily lrw-a-renji. lo 'those'shillml in. the art, I

.accon'rplish by the construction illustrated in theccconr;:nnyingdrawing, in whirh-- Fmurc is n lroht eli'walion ol'unelertrie V i i power-hammer embodying my lllVlllillOll,

. pnrts including the front "{:['llii2l-l' rolls living broken away tomore fully disclose the construction. Fig. '2 1S lew partly in trans-;verse vertical section ol the hummer illustratod in Fig. 1 lire. 3 is aherspectivr View either-emf Fig. 4- is zn enhrrgo'kl l'rngrniontars:view illustrating ekportion ol' the home I V Specification of LettersPatent. Appi iegtion filed my 19, 1909. SerialNorMZO'i'B.

' The numeralyl indicates.

reference to the said arms. .har 16 is arranged upon-end connected tothe Patntd'AugBQlQQQ.

hammer which may be of thcforniillustrsted and preferably ofconsiderable weight-and of great strength. Upon the base l'is suiteblyarranged inany desired mechanical manner the anvil 2 upon which the workis intended to be laid. Mounted uoon thehase" 1L and connected theretoon both sides of thc'zmvil 2 are the vertical frame pieces and 4 theinner-sides of which are arranged in *nnrollel relation to each otherand provided 'witli the vertical parallel grooves a'nd ridges .5adgioted to guide the rain in the manner hcreinhftcr to be more fullydescribed. Formed integrelly with the vertical iii-timepieces are; theforwardly and rearwnrdly extending: arms 6 and 7 at the too and 8 and 9intermedioite the top and the base 1. The purpose of the said arms is tosupport the laminated polojni'cees upon which the primary coils arearranged.

The front-lnniinated pole piece 10 end the rear laminated pole pie cc 11aloof s'uhston; tisllv the same construction; Encli; iicce consists of abuilt up or lan'iinsted structure, each of the lnmin-ations beingnrofernhly stamped fronrsheet metal and of the fornr illustrated in Fig.2. l\i'hen con'rpleted each pole piece presents eninnen ilot, verticallydisposed face in which ardenttrm-isvei'se grooves vertically spacedfronr emlnothcr and adapted to receive the primary coils. .lt may alsohe desirehle to arrange the pole pieces with the vertically dis-posedslots From one arm 6 to the other ar nfh cxtends the front pole piecesup'nortingfhnr 1 3,,whieh extends through the said pole "piecetronsverse to the lnniinotionsnnd nuivhc located at the top end of theslot .12 il desirodl bolts l i. extend vertically through the bar 13 Theand the arm 6 for the purposmpi' tif'lllllng the said hm" to the saidarms. .lllxtending through tlnrlpole pieces l'roinside to sidenndtransw-rsely with reference to the laminations is an aperture throughwhich the crossbar 15 extends, thc'soid her being:securely fastened tothe arms 8 in any :io'nroin'inte meclninirnl manner [or the "rt-F9030ofpreventing, movement of the pole piece 10 with The supqiorting rem"arms 7 in it inaniuir similar to'that just pole piece 11 is supportedupon the supporting bar 16 {L5 the pole "piece 10 is supported upon thebar 13. l iliewisothe crossbar 17 s' grnsggrfihT @FFWE? the .h as'e' ofthe i described for the crossbar- 13, and the rear extends from one arm9 to the other arm Qfand performs a function with reference to said armsand pole piece 11 similar to that performed bygthe cross-bar 15 withreference to the pole piece 10 and the arms 8. It should be noted thatthe inner faces of the pole pieces 10 and 11 should-be arranged inparallel relation to each other.

The transverse grooves in the inner faces .of the pole pieces arepreferably an equal distance-from each other and constitute twovertically arranged series oi such groovds,

' each groove on one pole piece corresponding to a similar groove in theother vertical series of grooves in theother pole piece. Arranged ineachtransverse groove in the pole pieces is a primary coil 18,eachcoil'being separately prepared, slipped into its appropriate grooveand secured in said groove in any .1 with the twelfth and so on throughthe series, 7 the said coils and connections being arranged suitablemanner. The coils so arranged thus constitute two parallel. verticallydisposed series arrarfged opposite each other and of similarconstruction. Vertical conin the manner common in the construction ofthree-phase induction motors. At the I upper end of each series is anappropriate three-phase motor triangular connection 19 forming theresistance inter-connection of the'last three coils of each series.

" It should be noted that the two series of coils are connected inparallel, the conductor 20 leading to the first coil on both series, theconductor 21 leading to. the'second coil in both series and theconductor 22 leading to the third coil in both. series.

Mounted upon the vertical frame piece 4- is a controller 23 adapted tothrow e'c'urrent ofi, to throw it into circuit under great resistance,to throw 7 it into circuit under small resistance, to throw it intocircuit without resistance and to throw it entirely out of circuit inthe order mentioned. The'details of the construction of the controllerare in no wise claimed in the present invention and, such details aretherefore not shown or described. The conductors 24, 25 and 26 areadapted to cdnduct a tri-phase alternating current from a suitablegenerator to the 'con. troller, the resistance shown at '27 being throwninto circuit by the controller when it is desired'to have relative]small resistance and theTesistance 28 is a so adapted to be thrown intocircuit when it is desired to have relatively greater resistance. lcontroller isoperated by the rotation of shaft 29 which protrudes fromthe controller case and is provided with the controller lever 30 fixedlymounted on said shaft. Formed in tegrally with the lever 30 the pointer31 may be arranged if desired and a disk rovided with appropriategraduations, as ll ustrated at 32 may be provided over which the In thecontroller I lllustrated in the drawings when the pointer 31 is directedsubstantially in a' downward ointer 31 may move.-

direction the current is cut out of circuit. When the shaft 29 isrotated to bring the j pointer 31' to the first division of the graduations the-resistance at 28 is thrown into circuit. When the pointer 31is brought to the, second graduation the resistance 27 is 1 thrown intocircuit. When the pointer 31 is brought to the third graduation allresistance is cut out of circuit and the current isallowed to flow intothe conductors 20, 21 and I 22 at the full strength at which it isreceived from the (generator through the ;conductors 24, 25 an to thefourth graduation or top the current is entirely cut oil. The shaft 29is not intended to make a complete revolution but 26. When thepointer 31moves, ,90

only a substantially one-half revolution. If

the pointer 31 is brought to the top or fourth graduation and thenreturned to the downward position first mentioned the current willremain cut out of'circuit durin the IG-r turn movement of the saidpointer lowest osition. If, however, the ointer is tions and then causedto return, to the down- I om the 1 said fourth graduation downwardlytoits roe ward or first osition the current will remain I in circuit anwill be caused topass throu 'h 1 the various resistances denoted by t egraduations in the reverse order from that t m which they have beenthrown into-circuit as the wardly. K The treadle 33 is pivoted to thebasal at the points 34 and a wei ht 35 upon an exten:

pointer was-previously moved up sion 36 of the said tread e is adaptedto main I V tain the said treadle normally in its upper...

position, in which position the operatormay readily depress the saidtreadle 33 byp'ush ing downward upon the same with his foot? Pivotallyconnected to the treadle 38 and to the controller lever3O is theconnecting rod 37 The arrangementof said connects ing rod is such thatwhen the treadle' 33 is depressed the lever 30 will be pulleddownwardly, rotating the shaft 29and moving the i j; pointer 31 over thevarious graduations upon I the disk 32, as hereinafter described. It! rshould be stated that the purpose of thetreadle 33 and the connectingbar. 37,is only forconvenience in operating thegcontroller 23 audit willbe obvious that the treadle 33-- and connecting rod 37 may well be exchafor some equivalent mec anism adap 5 described ltfslu I i thntii'thetreedle b so depr'essedns to stop 60 in circuit beoporsted by hand ifso desired. It should also noted that the. controller 23 may be locatedat some'di tiinoe fromxthe power hammer, if desired 5 and 22and 24, 25sndg zobeing extended and appropriately eonnehted to. the saidcontroller located at a distance from the said stances it f may be,waudlytrsvlling mng netic field will be pro- ,20 duced adjacent*thegtwo vertical series of coils the pole pie es, each pole piece withhus resembling to an f It should be note "thatwhen the treadle25-"133is-i-n its upper osition andthe pointer 325directedsubstantiallydownward the current i will be out out-ociijcuitand no magnetism will be present -sdjscjent the pole pieces. If

now the treadle is depressed slightlyyfbring-H ithe first graduationsrtion the resistance 28:

rcuit fand' a relatively etism' will beproduced 30 ing the pointer 31 beondthe ofi wil hwthrown int small amount of m ad jacent the pole pie s Hthen the trcad'lc 35 is depressed until th second graduation on thecontrolleris reached the magnetism in the pole pioces willh'e increasedby reason of the fact that theresistance 27 0111 will be placed inthe'circu t. If the tread e is then 40 depressed until. the *thii'dgraduation is xreaehcdpthe full steength' current will be conducted tothe coilsjin the pole pieces and i the ifu-l l strength. of upwardlytraveling magmnetic iieltl;willibe produced. lithe treadle be further(-lepressedfso as to bringthe pointer lit-to the fourth greglnat-ionor-uppermost a 'positionuthc currentfiw llbe-cut oif and themagnctls'nradgacentthe pole picccs mmediatelydiscontii-rued,yllhetreadle maythen. ,be allowed to return to its upper{)OSltiOIl 1' travels again down while ;the pointer r '3 ,OH position,no curwardly to the lower rent being throw returnjol'f the edit "winter,as hercinbei'orc be noted, however,

the pointcrfli sh of the extreme upper )ositionQand then allower-lltorcturn to the ower otl' positionj thcfcurrent will remain I during thereturn of. the said 1 pointer,g the resis nccs 37 and 28 being throwninto circui nthe reverse order from that in'wl' ch tlicygverc throwninto circuit as the pointer 31; as previously moved scopes theconductors 20, 21

remove the controller necessary jarring incident to" an induction motor.

wear. 40 is a built up or laminated structure 421' "which projectsslightly beyond theiront and "into circuit during the I being.

It should be noted that the controller 23 i may be .so arranged that thecurrent mrty not only be thrown onwith varying resistancesnnd oiiegain,but may also be reversed,

and this reversal of current, by means of an appropriateficonstructronof the controller, may be accompanied" with the throwing in ofappropriate resistances. The construc-j tron oi the controller,- asherein-before were tione-d, is not herein claimed as a part of: theinvention and hence no detailed description of the same 1s deemednecessary. It. will beobvious, however; to those skilled in the art,

that the controller'msy be so variedin its construction that-themagnetic field edj acent the pole pieces may be caused to-travel eitherupwardly or downwardly and at varying intensities or may be cut off whendesired.

i The ram consists of the head portion 38 to which the hammer 39 isadapted to be connected and also. the integral, spsced, unwardlyextending side flanges LO'toaWhich,

as also to the head '38, are connected the grooves and ridges 41adaptedto engage the grooves and ridges 5 in theirs-me pieces'S and 4hereinbefo're previously described. It should be *IlOtMliJhfiit thegrooves end-ridges 41 extend practicaliy the ful-lflength "ot the' ramend-that there is a plurality of such grooves'end ridges, suchconstruction being preferable because of the accuracy of movementthereby produced: and also bemusef.ol the reduction of friction and ofcelpparcnt f x I flanges Arranged bGiLWE GIIZthB spacer rear er gcs ofthe saidflsnges, Intheflfront' and rear projecting portions of thelarninatedw providing for the inlaying of the copper bars 43,const1tu-trng-tir secondary winding.-

structure a transverse groovesefs cut thus" 06 each end of the copperbars; all of the hers-10f the vertical series are connected bythe bar L44 in the manner well understood to those skilled in the art ofinduction motor building,

and 44 thus constituting what is cbmmonliy called a short circuitedsecondary. t

should be understood that thcstructure 42" is firmly fixed withreference to the fian esm 1 end thehead 38, and this is preferablyetc-11;

cornplished by means of bolts or pins extends 111g transversely of thelaminated sheets cone stityutinp; the structure 42 Land firmlydesignated by the numeral 46. thought desirnblc'to l'orn the laminatedsheets 42 in two sccthins, as fully illustrated in, Fig. 2, theinsulation 47 being arranged betwecn'the two series of sheets.

When constructed, the rain'should be irrranged between the vcrtlcalfrnme pieces 3 and 4, with the grooves and ridges 41 in enfl con-Lnectedto the flangcs ii, such bolt-so pins'fi i numbered 45 in th gdrawing and; adapted to beentcred through the mperturefs J It maybe thelaminated, structure 42 with the bars 453 ill:

' grooves and ridges 5, and he lure 43 locater adjacent the polopicces'll.) and ii. .lt will thus be seen that the pole piece IEO togetherwiththe adjacent side of the short circuitcd secondary constitutes oneolcctro-niagnetic motive element, while the-polo piece ll, together withits adjacent portion of the short circuitod secondary circustitutes asecond clectro-magnetic motive element, and that the magnetic pull ofthe appropriate hooks connected with a tackle may be arranged forlifting and-placing the said rain. it should be noted that when the ramis lifted from the frame work all parts of the primary winding willbereadily accessi lilo and that if desired. rains of dilierent weights mayhe usedon the same power hammer by merely lifti g one ram out of theframe Work andsul s'tituting another rain of appropriate weight for a'difi'erent class of work to he done. Such sul' stitution of rains unityalso he found convenient if -for any reason the rain in use shouldbecome injured. Such'injuredranrs may be easily lifted out andjrepairedwhile a substituterain is placed within the frame, thus avoidingunnecessary delays for repairs. It should be especially noted in thisconnection that the said ram may be lifted out without removing ordisplacing anyof the parts of the hammer.

A power-hammer of the character de scribed having been provided a rainof appropriate weight should be selected and an ranged within the frame.The anvil 2 and the hammer 39 being properly placed ztnd attachedandlieing of appropr ate shape for thework in hand the ram ere lifted atwill bythe operation of the controller 23 through the treadle 33. Therain incl-y be lifted to the full height of thepolc piecesand allowed todrop of its ownweigl1t by bringing the pointer 31 gradually over thegradu'ations on the disk 32 until the said pointer reaches the uppermostgraduation when the current will be cut out of circuit Ifdcsired,however, the ointer 31 may be raised but a few of the gra nations on thedisk 32 and then allowed to descend, in which case the resistance beingswitched into circuit-in the inverse order from that in which it isswitched into circuit by the' ascending pointer, the ram will be retarded in its downward movement, thus do:

scopes sccnding with loss forceand speed, thereby dealing a blow of lessintensity. If desired an appropriate controller may be arranged wherehythe current may not only be gradu- I ated-and out in and out ofcircuit,butalso be reversed, in which case therein may be but lay a downwardlytraveling magnetic field similar to'tlic upwardly moving magnetic fieldby which the ra n is raised." It willthusi be seen that by properlycontrolling the triphasc alternating current supplied to the conductors20, 21' and 22 the movements of,

the rain may be fully and completely C011",

trolled, we that blows of varying intensity and rapidity maybeproduced'atthe will "of to operator. i l

While lhave shown and described my in.- venticn as being operated by athree-phase alternating current anrhsuch s the preferable: l J

construction, yet I do not desire. tob'eli'rn' itedto such construction,.as it is evident that the construction might be adapted for single ortwophase currents" withoutdepartr ing from the spirit of'th'c invention.It

should also be'stated that by the use of the wordcontroller herein 1 donot desire to be limited to any particular kind of controller, as it isevident that 1n someunstancesla simple switch'or autostarter1m ht besufficient to properly operate the (lY1C6 and that in anysuch instancesthe said switcher autos starter would'be such ac'ontroller asj'wo'uldffulfil the spirit and meaning of the term com.

trollerasus d I the f desire to inter!v met the word controller as meamg de vice for switching or controlling the electric current supplied tothe device.

I claim: c

1. An electric power-hammer comprising" I wound and conncctedinaccordancefwith thrce-phae induction motor construction,

the coils in the series connected 11' paralleltoconductors of atr1-phasealternat1ngcurrent,. Y -l 3 a plurality of spaced, parallel series cfcoils a controller arranged withiuthe circuitof said conductorsforcontrolling the current supplied to the said coils aiidaframcomprising a hcad,.a hammer andia'short circuited secondary connected tosaidhcad, the said ram located between the said parallel series;

of coils andadaptcd to be moved in a line parallel with said coils bythe traveling mag netic field produced adjacent to said coils by thesaid current. v I: r I

2'. An electric power-hammer comprising a plurality of spaced series 0i,coils arranged on pole pieces, thesaid coils wound, disposed andconnected in accordancewith induction mo torconstruction, the coils inthe different series connected in parallel to conductors of;

alternating current, a controller arranged within the circuit of saidconductors for con v I trolling the currentsupplicd to the said coils,

hrougl tdownwardnot only by its own weight i ondary immediately connectsthe coils in the various sericsifconnectedin parallel to conductors of atri-pha'se alternat mgcurrent, a controllenarranged Within the i circuitofsaid conductors fo'i lcjontrolling the current supplied to thesaid'coils, and a ram 520, comprising a head and a shortfcircuited sec-'li-to said head,

the said ram located betwee the, saidparif allel series of coils andadapt 1 to he moved an a line parallel with said parallel series.

2,5 4. An electric power-hammer comprising a plurality of spaced seriesof jcoils'arranged 'on ole pieces, the said coils Wound, disposed ancinter-connected in accordance with in duction motor construction, thecoils in the so different serles connected miparallel to condoctors ofan alternating current, a controller arranged withiri thecirc lit ofwthesaid con ductors for controlling t e current sup lied to said coils, anda ram comprising a earl 5 and short circuited secondariesimmediatelyconnected to said head, each-rot said seccnrh ,aries located adjacentone offithe series of coils, the said ram locatedbetfween the saidplurality of series of coilsand ladapted to he I moved 1n a lineparallel withfsaid series.

5. In an electr c power-haninicr, in combi nation, a pluralit ofvertically disposed series of spaced coi s Wound and'connected inaccordance with induction motor construction, with a ram adaptedforfWerticalmovement intermediate said plurality of series of coils,said ram comprising a head, a hammer connected thereto, spaced flaii csconnected to said head and a plurality offlsliort circuited 0secondaries connected tosa" ,head, eacli of said secondaries beingarrang d adjacent one of the'series ofcoils andfadapted to remain.adjacent the said series du g, the move ments of said ram. 9 i

I 6. In an electric power-hammer the comlhination of a pluralityoflaterally s )aced longitudinal series of coils, (th coils of eachseries wound, dis osed" ncted in ace; cordance with in uetio'n inotorconstmctio ,f

' and a rarnlocated intermediate the various laterally spaced series ofcoils and adapted for movement in line withftlie said series, the saidram provided witliwjshort circuited secondaries, each of said,secondaries adapted to be actuated by a corresponding series of ees f'rAVAlLABLE coca coils means for conducting" alterhating, on 4 rent tosaid' series of coils snd the' 'varioixsg series c'cnnectedinparallels:i "711mm electric ower hammer the comvbination of a plum ity;ofspaced,- paralleh straight series of coilsconstituting a plurality:-

of induction motor primaries and aramv lo-j cated between said spacedseries and ads. ted for movement'in aline alallel with sa-i serie's,saidram provide 'With'a' plurality of secondaries, each secondary havingits face I adjacent its corresponding primary parallel, with said rimarythevarious series consti tuting sai primaries connected in parallel;

rent to said primaries, whereby thesaid ram may be movedin a lineparallelwith said s aced primaries and maintained in aco ition ofequioise during said movement;

8. In an e ectric power hamrner a ram comprising a head, a hammerconnected to. said head, spaced flanges connected to said head, alaminated structure arranged-lie said head, and a vertical seriesjoftransversely, disposed copper bars inlaid ingrooves in saic laminatedstructure, and means for short circuiting the said bars. p i 9. In anelectric power-hammer a mm.

spaccd:. :'vertical, parallel position; said pole pleces provided with,transverse slots upon their inner sides, avertical'series of coils a rranged in the slots ofeach pole'piece, said,

ings,'a ramlocatedbetwen the spaced frame said ram'com risixtlg a head,a hammer. con; nected to sai hea 1 nected tozsaid head, said flanges andhead mg to and adapted to slidevertically 1n the said grooves andfridges in the said! frame tween said flanges and connected .thereto,said laminated structure havin its sides- M ran ed closely adjacent the--sai H "pole pieces, sai structurei pro ideal withej transverssvgrooves, copper a and means for conducting an alternating cur- ,853

, tween said spaced flanges and; connected to" comprising a head, ahammer connected-tote I frame pieces o r tending arms, front andreanpolejpieces' -l m'ounwdupon. said arms, and h d. in fixed,

,icoils being connectedj n ,accoidancc with I15 three-phaseinduction,motonprimary wind P196 and between ref r po e. Pie'ceflflnd'spaced flanges eon- 12 :1"

)rovidedWithgroovesiandridgescorrespond pieces, a laminated structurelocated hen jf s inlaid inpaid grooves ,coils in thetwo vertical'serie sconnected in parallel-to said conductors and-a controller and adaptedfor ontrolling the current con- 1 I ducted to the primary windingssubstantially as described;

5 arranged; in the circuit of said conductors of two witnesses.

In testimony that .l claim the nbove,1havej f l hereunto subscribed mynzm'le in fille'pl'eseneu I l? T AmmUs l5.

Witnesses: I I

IRENE LUTZ, v WILLIAM H. MILLER.

Plum;

